21004134141499 has 2 divisors, whose sum is σ = 21004134141500. Its totient is φ = 21004134141498.

The previous prime is 21004134141493. The next prime is 21004134141539. The reversal of 21004134141499 is 99414143140012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21004134141499 - 2²⁹ = 21003597270587 is a prime.

It is not a weakly prime, because it can be changed into another prime (21004134141493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10502067070749 + 10502067070750.

It is an arithmetic number, because the mean of its divisors is an integer number (10502067070750).

Almost surely, 2^{21004134141499} is an apocalyptic number.

21004134141499 is a deficient number, since it is larger than the sum of its proper divisors (1).

21004134141499 is an equidigital number, since it uses as much as digits as its factorization.

21004134141499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 21004134141499 in words is "twenty-one trillion, four billion, one hundred thirty-four million, one hundred forty-one thousand, four hundred ninety-nine".